What is the correct order of structures as you move from outside a muscle cell, to deep inside it?

A) fiber, myofibril, myofilament B) myofilament, fiber, myofibril
C) myofibril, myofilament, fiber D) myofilament, myofibril, fiber


Answer: A

Anatomy & Physiology

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Name four different bone markings associated with the proximal portion of the ulna

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Calculate the mean arterial pressure (MAP) for each example listed.

A. a person with a blood pressure of 120/80 mm Hg B. a person with a blood pressure of 130/95 mm Hg

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Sympathetic stimulation of the kidney results in

A.  constriction of afferent arterioles and an increase in the surface area of the glomerulus. B.  constriction of afferent arterioles and a decrease  in the surface area of the glomerulus. C.  dilation of afferent arterioles and an increase in the surface area of the glomerulus. D.  dilation of afferent arterioles and a decrease  in the surface area of the glomerulus.

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During thyroid hormone secretion,

a. the follicular cells phagocytize a piece of colloid. b. T4 and T3 are split off of thyroglobulin by lysosomal enzymes within the follicular cell and subsequently diffuse out of the cell into the blood. c. T4 and T3 are secreted by exocytosis of the colloid that has been internalized by the follicular cells. d. both (a) and (b) above. e. both (a) and (c) above.

Anatomy & Physiology